Peter Grobstich
(Another of the Prime Pages' resources)
The Largest Known Primes Icon
  View this page in:   language help
GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

person A titan, as defined by Samuel Yates, is anyone who has found a titanic prime. This page provides data on those that have found these primes. The data below only reflect on the primes currently on the list. (Many of the terms that are used here are explained on another page.)

Proof-code(s): g267, p162
E-mail address:
Username: Grobstich (entry created on 01/11/2002)
Database id:344 (entry last modified on 03/28/2006)
Active primes:on current list: 5 (unweighted total: 5), rank by number 171
Total primes: number ever on any list: 369.333 (unweighted total: 370)
Production score: for current list 46 (normalized: 7), total 46.3977, rank by score 424
Largest prime: 17 · 21990299 + 1 ‏(‎599141 digits) via code g267 on 03/16/2006
Most recent: 31735 · 2404874 + 1 ‏(‎121884 digits) via code g267 on 03/23/2009
Entrance Rank: mean 31.20 (minimum 17, maximum 58)

Descriptive Data: (report abuse)
I work as professor at the University of Applied Sciences in Neubrandenburg /Germany. My subjects are Mathematics and Computer-Algebra-Systems. I use to prove primes these programs: NewPGen, PRP and Proth.

I am Peter Grobstich and I would like to
Edit this page
Submit primes using the proof-code: (a password will be required)
(Reuse an old code if your are using the same programs, projects... Only create a new code if you are doing something differently than in the past. Duplicate codes will be merged.)
Surname: Grobstich (used for alphabetizing and in codes)
Unverified primes are omitted from counts and lists until verification completed.